High-pressure pump



v Nov. l2, 1929. l P. M. RUDESYLE 1,735,299

' HIGH PRESSURE PUMP Filed Jan. 29. 1927 ELEF M. Rudeggla.

S14/vento@ Patented Nov. l2, 1929 PETER M. RUDESYLE, OF HAWTHORNE, NEW JERSEY HIGH-PRESSURE PUMP Application filed January 29, 1927.v Serial No. 164,484.

The present invention relates to pressure pumps of the hand operated type for use in the forced feeding of lubricants into the working parts of machinery, and relates more specifically to devices of this character commonly known as grease or oil guns.

.The primary object ofthe invention being to provide a novel and eflicient type of pressure operated pump particularly well adapted lo for use in forcibly feeding of lubricants to the moving parts of an automobile or other machinery, and especially to those bearings and joints intendedto be lubricated byheavy oils and greases forcibly injected thereinto. n A further `object of the invention resides in the provision of a hand operated pressure pump as set forth, embodying a reciprocating plunger having actuating means connected therewith for forcibly moving of the plunger step by step in one direction for ejectingof the lubricants from the pump, and an automatically acting keeper means for preventing counter or back movement .of the plunger during operation of the actuating means.

vide an improved type of hand ,operated pressure pump which may be used either in connection-with the distributing of either light oils or heavy greases. f

v LA still further object of the invention is toL provide an improved device of this ,char-` acter embodying an operatingk klever l so mounted as to permit of great pressure being applied to the plungerfor rejecting;` ofthe lubricant, and which lever has its-majorpon tion extending longitudinally o f the barrel of the pump, with means for locking the lever in a posit-ion closely adjacent and extending longitudinally toone Side ofthe barrel for the pump. n .If j y U f A sti-ll further object of the invention is to provide a novel pump of this type wherein the pressure actuating means may be readily rendered inoperable for forced feeding of the plunger, and allowing for the plunger to be reciprocated by hand as when filling the pump, or ywhen it is not essential that the lubricant be ejected from the pump under considerable pressure. y

5 'Other objects and advantages of the inven A further object of the invention is to prof tion will be apparent during the course of the following detailed description, taken in connection ywith the accompanying drawing forming a part ofr this specification and in which drawing:

Figure l is a view part in longitudinal section and ypart in side elevation of the improved pressure pump and showing the f plunger carrying stem ina position to kbe operated upon by the actuating means for forcedmovement of the plunger.

Figure 2 is a fragmentary sectional view of the upper end of the pump and showing the plunger stem in a reverse positionfrom that as illustrated in Figure l for permitting of free reciprocation of the plunger.

Figure 8 isa fragmentary side elevation of the upper portion of thepump and showing the operating lever swung laterally of the pump bai'rel for moving the plunger inwardly. f

Figure 4 is a fragmentary elevation of the upper portion ofthe pump andtaken at a right angle from that as illustrated yin Figure 3. 'y

Figure 5 is a transverse section on line 5-5 of Figure l. y

Figure 6 is a detail sectional view of the lock for the operating handle. Figure 7 is afragmentary sectional view taken substantially along the line 7 7 of Figure l. f f 1 Referringto the drawingin detaiLand wherein similar reference characters designate corresponding parts throughout the several views, the letter A designates a barrel or chamber for the lubricant,provided at one end with a cap B and at its opposite end with a head C; an ejecting means movable in the barrel A; E actuating means for operation of the ejecting means D; F stop means for the means D; and G a locking means for the actuating means E.

The barrel or chamber A and which is of tubular formation, is preferably provided at its lower end with a knurled portion l() and is externally threaded at each end for threaded reception of the cap B and head C.

The cap B, for threaded connection with the lower or discharge end of the barrel A, is

preferably provided with an internally threaded nipple 11 into which may be threaded a ilegible metal hose tor conveying ot the lubricant to any desired point.

The head C and which is intended tor threaded connection with the opposite end of the barrel A, is provided with a guide block 12 formed with a guide opening 13 which when the head is threaded upon the barrel A, extends (1o-axially with the anis ot the barrel. Extending rearwardly from each side of the guide block 12, are substantially llat ears 14 which project past the circumterential surface ot the barrel A and also reject upwardly above the upper face of the bloik 12. These laterally 'and' upwardly projecting ears 14 serve as means tor pivotal mounting ot the actuating means E.

The ejecting means l) embodies a plunger or pist-on 15 which is preferably provided with double 'acting washers, and extending from the piston 15 is ak 'cylindrical stem or rod'1'6 which projects through the round guide opening 13 in the head block 12. outer end ot the 'stem .16 is preferably provided with la suitable 'handle 17 which may be employed for movement ofthe piston 15 and for permitting of the readyrotation ot the ejecting means D. p Provided longitudinelly ot the 'stem 16, is a series ot ratchet teeth 1,8 which 'co-ja'ct with the actuating means' E tor vforcibly,moving 'ot the piston 15 step by step toward the vdischarge cap B.

Referring now Ito the actuating means ll 'tor forced operation kot the ejecting means D, the same embodies an operating lever 2() being pivotall'y mounted its upper end between the 'ears 14 as by means 'of a suitable tulcrum or pivot pin y21 mounted in the ears 14 above the guide block 12 and outwardly ot the' circumferential tace of the tubular barrel The upper `end of the lever 2O is preferably provided with' an inwardly oliset portion or Vshoulder 22, and positioned opposite sides et the upper end ot the 20, are sheet metal head pl flanges 24 provided Athere re overlying the router surface yoit the leve v 4s 25 'which clamp about the inner side at theV vleverbelow the shoulder 22. Entending forwardly or inwardly each vhead plate 23, areplate like arms 26 which tend opposite sides o the stem 16. of the arms 26 is 'provided with guile ways 27 which prettrably open at the :to-rw rd l t the arms as illustrated in Fig i The actuating means Etui-ther enib a sliding ratche.l 30 provided with e. way 31 for sli ly 'recel the cylin'd Vstem 16. Pivotally carried by the 30, is a sui-table spring pressed pawl which has its gr'ippi'ng point normally urged toward the stein 16 for e'ngagnm` inthe ootliv rack 18. This pawl '32 may be pivot Yneunted upon the pivot 'pin-33. Project The Y tended to enga f plate like arms 26.

the dat side ta es and plate like arms 26 will retain the sli K tchet 3() against rotation upon the cylindri al stem 16 and thus retainv the pawl in a set position and to the opposite side oi the stein 16 trom that et the pivotal mounting 21 et the operating lever 20.

The guide block 12 is provided with a transversely extending bore 36 and which as will be apparent by viewing Figure 7, has a portion thereof4 intersecting the ground guide opening 13 through which the cylindrical stein 16 moves. This round transverse bore 86 serves as a bearing for the stop means l", and as will be observed is disposed to that side ot the stein 16 to which the p'awl 32 is arranged. This stop or keeper F einbe-dies cylindrical Yterm ilbearing portions tor rotatable mounting in the terminal vvions et the bore 86, and an intermediate y disposed t' shaped keeier port-ion at the .guide opening 13. As will e 1 in Figure 7,"thje terminal bearing portions 37 by engaging the stem 16, will prevent longitudinal movement of the stop in the transverseY Vbore 36. In assembling, the stop l" must first he positioned in the bore 36 and then Othe stem 16 passed through the guide opening 13. Vlirowid'ed at end of the stop F, is laterally projecting arm 39 which is adapted torock in a suitable Anotch 40 providedin one side otv the guide block 12, and a spring 41acts upon the arm 39 to ornrilly roc ing the point of the lf' shape@L per 38 toward the stein 16.

Referring now to the locking mea-ns G, the same preferably embodies af threaded plug 42 which is intended to be threaded into one ot the ears 14 directly below'the pivot bolt 21. Slidably mounted in the plug'42, is a plunger 43 which is normally urged outwardly by means et an expansion spring 44. Pivotally n'iounted at the outer end of the plug 42 is a lever 45 provided with a cam like hea-d46 which upon swinging'movement ot theV lever 45, serves to torce the plunger 43 inwardly into asuitable aperture 47 provided in the operating leverf20.y YBy observing Fig-V ure 6, it will be seen thatwhen the lever is `swung downwardly into the dotted line position, that the plunger 43 will Abe moved inwardly for locking engagement with the lever 20. n f f K i rlfhe vlo-weror Atree end 'ot thefoperating lever 20 is provided with `an' open hand grip i 50 .in which the operator may position the 51 for permitting of the entry of air during filling of the barrel A, or when moving of the piston toward the head.

In use, and when desiring to till the barrel A wit-h a suitable lubricant, the stem 16 is first rotated by means of the handle 17 to a position whereby the ratchet teeth 18 will not be engaged by either the pawl 32 or the V shaped keeper portion 38 of the stop F, and in which position. as illustrated in Figure 2, the stem 16 may be readily drawn thru the head C and sliding ratchet for withdrawing of the piston 15. The cap B may then be removed and the barrel filled with a suitable grease, and the cap then threaded upon the barrel and a flexible hose connected to the nipple 11 if such hose to be used for erf, veying of the lubricant to inaccessible pl aces. The stem 16 may then be rotated by means of the handle 17 into a position as illustrated in Figure 1, and upon grasping the open handle 5() and swinging the lever 20 away from the barrel A about its pivot 21, the free ends of the arms 26 will force the sliding ratchet 30 toward the head C, and by reason of the pawl 32 engaging in one of the ratchet teeth 18, the piston 15 will be moved toward the capB for forcing of t-he lubricant through the nipple 11. 'As the sliding ratchet 8O moves for forward movement of the ejecting means D, the ratchet teeth 18 readily more past the spring pressed keeper portion 38 until the sliding ratchet engages the guide block 12 which act as a stop for limiting outward swinging movement of the operating lever 20. Upon returning 'of the lever 20, the stop F engages with the proper ratchet tooth and prevents counter or outward movement of the ejecting means due to the pressure formed in the barrel A. If using light lubricants such as oil, the lever 20 maybe locked against the barrel Afby means of the locking means G, and the ejecting means operated solely by means of the handle 17 with the ratchet teeth in a position as illustrated in Figure 2. When using light oils in the pump, the same may merely be sucked through the nippllaell without necessarily removing of the cap Referring again to the piston 15, and which is of improved construction for enabling the piston to hold up under heavy pressure, the same embodies an inner washer of special formation, provided with a cup portion and a disc portion 61 which is a lapted to engage the inner cup washer 62. Arranged between the inner washer 62 and an outer washer 63, is a metallic disc 64 which is preferably of a diameter equal to the inner diameter ofthe barrel A, and rdisposed outwardly of the washer 63, is a retaining washer 65 held in position by means of a nut 66 threaded upon the reduced threaded end 67 of the stein 16. As will be observed in Figure 1, this reduced stemportion 67 provides a shoulder against which the inner washer abuts, and by reason of the cup'portion 60 of the washer'snugly embracing the stem 16, the piston 15 is prevented from tilting when a considerable pressure is applied'to the actuating means E. i From the foregoing description it will be piston by means of the` apparent that an extremely simple and novel for the actuating` means whereby the lubricant may be ejected under great pressure from the pump and thus forced into tight bearings and joints for ellective lubrication thereof. 1t will also be apparent that the actuatin means embodiesia relatively long operating lever for securing of a good leverage for operation of thc ejecting means, and which relatively longhandle normally lies longitudinally to one side of the barrel for' containing the lubricant. f y

Changes in detail maybe made to the specifie form ofthe invention herein shown and described, without departing from the spirit of the invention or the scope of the following claims. y 1

f I claim: f

1.y A pressure pump comprising a barrel provided'at one end with a discharge opening, a head carried by the opposite end of the barrel provided with a guide opening and spaced apart ears projecting laterally from the head, a stem yprovided with ratchet teeth, movable in the guide opening and carryin a pisto.l a t its inner end, a ratchet member guided on the stein outwardly of the head and including a pawl able with the ratchet teeth of the stein tomove the. stem in unison withthe ratchet member forforeing ni .terial thru ,the discharge opening of the barrel, an operating lever extending longitudinally at one side of the pump barrel and pivotally mounted between the` laterally projecting ears of the head outwardly of the circumferential face of the barrel, and arms carried by the pivoted end of the lever, and extending inwardly at each side of said stem and having slotted ends for slifdable connection with said ratchet to reciprocatethe 'latter by oscillation, of the lever.

'A pressure pump including'a barrel prorvided at one end with a head having a guide yopening and spaced apart ears projecting lat- 'e=ally of and above the head, a piston, a stem for the piston' slidableand rotatable in said guide opening and having ratchet teeth eX- tending longitudinally at one side thereof, a

handle carried by the outer end of thestein, an actuating means for the stem including'a ratchet slidable along thestem and a .lever pivotally mounted between said ears and ex- 'f 5 ltending longitudinally of one side of the Apump barrel, and locking means carried by one of said ears and engageable'with said lever for locking the lever against pivotal swinging and in close proximity to one side of the pump :1g barrel.

3. Ina pump of the class described, a cylinder, a head for one end of the cylinder provided with a guide opening, a piston stem provided with ratchet teeth, slidable in the guide v115 opening, a ratchet member guided on said stem and including a pawl engageable with said ratchet teeth upon movement of the ratchet toward said head, and means for movvthe ratchet toward and away from said '.20 head.

el. in a pump of the class described, a cylinder, a head for one end of the cylinder pro-v vided with a guide opening, aV piston stem provided with ratchet teeth, slidable and ro- 725 tatable in the guide opening, a ratchet member slidably d non-rotatably guided on said stem and including a pawl engageab-le with said ratchet teeth for movement of the ratchet toward the head, operating means for impart- `3D ing movement to the ratchet along the stem,

and a cylindrical stop member rotatably carried by the head and having a keeper portion engaveable in the ratchet teeth for preventu Il n n ino' retroactive movement of the piston stem.

' J5 `5. In a high pressure pump including a plump barrel, a piston .rod including a body portion having a reduced, threaded-inner end fermi-ng a shoulder, and a piston for the rod comprising an kinner washer member includ- "lo ing a cup portion slidably fitting over the r yd body A.portion and a` discr portion engaging in shoulder, an inner cup washer in engagement with saidV disc portion, an outer cup washer facing oppositely from the inner cup 45 washer, a metal disc between the cup washers, a retaining washer in engagement with the outer cup washer, and a retaining nut threaded upon the reduced end of the piston rod Jfor clamping the piston elements to the piston 5o red.

6. In a pressure pump including a barrel and a head at one end of the barrel, a cylindrical piston rod slidably and rotatably extending thru `the head and having transverse- 55 ly disposed ratchet teeth extending in spaced relation longitudinally along one side thereof, Y

a handle at the outer end of the rod, actuating' means for imparting inward movement 'to the rod includ-ing a pawl operating at one 69 side ot the rod for engagement with the teeth thereof, and a stop, carried by the barrel head, operatively engageable with the said teeth of the piston rod when ythe rod is in operative relation to said pawl.

G5 PETER 'M nUDEsYLE. 

